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| maison pour deux familles; maison à deux logements | |||
| duplex | |||
| double face; envers | |||
| bilatéral simultané | |||
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| duplex | |||
| bidirectionnel | |||
| double | |||
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| bilatéral | |||
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duplex : 71 phrases in 13 subjects |
| Communications | 26 |
| Earth sciences | 1 |
| Electronics | 6 |
| Industry | 2 |
| Information technology | 5 |
| Materials science | 5 |
| Mechanic engineering | 3 |
| Medical | 4 |
| Metallurgy | 3 |
| Microsoft | 2 |
| Statistics | 1 |
| Technology | 7 |
| Telegraphy | 6 |